1. WHO. Tobacco-Fact Sheet No339, July 2015. Available: http://www.wpro.who.int/mediacentre/factsheets/fs_201203_tobacco/en/. Accessed 25 March 2018.
2. Culture and Smoking: Do Cultural Norms Impact Smoking Rates? Available: https://tobaccofreelife.org/resources/culture-smoking/. Accessed 9 Nov.2018.
3. Medicinal uses of tobacco in history;A Charlton;J R Soc Med,2004
4. Tobacco Use–A Cross-Cultural Comparison. 2010 Available: http://entheology.com/research/tobacco-use-a-cross-cultural-comparison/ Accessed 9 Nov. 2018.
5. The economics of tobacco and tobacco taxation in Bangladesh;A Barkat;International Union Against Tuberculosis and Lung Disease,2012